It appears another "gigaleak" has gone down, involving Nintendo. According to sources online, it appears that Game Freak has been hacked, resulting in internal data from the company being leaked to the public. Those involved in the hacking community or those within general Pokemon related groups...
Not a native speaker, but to me it sounds correct in this context, since it’s about the source codes of multiple games (versus the source code of a singular game/project). Similar to how “peoples” can be a correct plural when talking about multiple groups of people.